Tumbler



FIG. 1 is a perspective view showing a top and front of an ornamental design for a tumbler;

FIG. 2 is a front view of the tumbler shown in FIG. 1 and is also representative of all side, front, and rear views;

FIG. 3 is a top view of the tumbler shown in FIG. 1;

FIG. 4 is a bottom view of the tumbler shown in FIG. 1;

FIG. 5 is a front view of the tumbler shown in FIG. 1 and in an environment including a lid attached to the top of the tumbler; and,

FIG. 6 is a front view of the tumbler shown in FIG. 1 and in an environment including a handle attached to the side of the tumbler.

The subject matter shown in broken lines is not considered part of the claimed subject matter. 

The ornamental design for a “tumbler,” as shown and described herein. 